Gasolene tank and filter.



H. W. CHYNOWETH.

GASOLENE TANK AND FILTER. APPLICATION FILED OCT. 24. 1916.

1,235,438. Patented July 31, 1917.

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A TTORIVEYS H. W. CHYNOWETH.

GASOLENE TANK AND FILTER.

APPLICATION man 001.24, 1916.

1 35,438. Patented July 31, 1917.

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UNITED sTAtrns PATENT OFFICE.

HENRY WILLIAM 'CHYNOWETH, F PASADENA, CALIFORNIA.

GASOLENE TANK AND FILTER.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed October 24, 1916. Serial No. 127,444.

My invention 15 an improvement in gasolene tanks and filters, and hasfor its object to provide a device of the character specified for usewith internal combustion en gines, wherein a main tank or reservoir isprovided with an auxiliary tank, the latter having means for causing thesediment in the fuel to be deposited where it may be withdrawn, andwherein the fuel is taken from the said auxiliary tank to the car- 7bureter through a screen.

In the drawings:

Figure 1 is a longitudinal section of one embodiment of the lnvention.

Figs. 2 and 3 are sections on the lines 2-2 and 33, respectively, ofFig. 1.

Fig. 4 is an end view of another embodiment of the invention.

Figs. .5 to 8 inclusive, are sectional views of other embodiments of theinvention.

In the embodiment of the invention shown so in Figs. 1 to 3 inclusive amain tank 1 is provided having a filling nipple 2, normally closed by athreaded plug 3, and the main tank is provided with an auxiliary portionor extension 4, which is the filter, the said extension or auxiliarytank being integral with the main tank, as shown.

A nipple 5 in the bottom of the main tank forms a communication betweenthe main tank and the filter extension, and a pipe 6 leads from theopposite side of the filter extension to the carburetor. This auxiliarytank or filter extension is of greatest depth at its center, as shown,gradually decreasing in depth toward the ends of the main tank andtoward the sides thereof, and at the deepest portion a transversepartition 7 is provided, the said partition extending from the bottom ofthe main tank to near the bottom of the deepest portion of the auxiliarytank. A drain valve 8 is arranged at the deepest portion of theauxiliary tank and directly below the partition, for permitting thecontents of the tanks to be drained for cleaning and the like.

The pipe 6 extends through a nipple 9 in the bottom of the main tank,and a plug 10 is threaded through a nipple 11 in the bottom of theauxiliary tank in alinement with the nlpple 9 and coaxial therewith.This plug closes the lower end of the pipe 6, and the said pipe isprovided with a lateral inlet opening 12 atthe plug. A cylindricalscreen 13 of gauze is connected with the plug, the said screen beingapproximately concentric with the pipe, and extending from the plug tothe bottom of the main tank, so that all of the fuel which enters thepipe 6 must pass through the screen.

In operation, the fuel passes from the main tank, as indicated by thearrows in Figs. 1 to 3, through the nipple 5, beneath the partition 7,through the screen 13 and opening 12 to the carburetor." Any sediment orimpurities that may be in the fuel must pass beneath the partition 7,and the said impurities will be precipitated and will remain at thedeepest portion of the auxiliary tank, where they may be withdrawnthrough the drain valve. Any impurities that may pass this point will'beheld back by the screen, and will notenter the carbureter.

In the construction of Fig. 4, the main tank 14 is provided withafilling nipple 15 having the closing plug 16, and the auxiliary a.

tank is formed of a flexible pipe 17, communicating at each end with themain tank, and the said pipe is provided at its center with a downwardlyoffset portion 17*, in which is arrangeda drain valve 18. The inlet end19, of the pipe communicates with the main tank at the end adjacent tothe filling nipple, and at the opposite end the pipe 17 is provided witha T 20. This T is connected with the bottom of the main tank, and thepipe 21 leading to the carbureter extends upward through the main tank,as shown.

This pipe 21 has a lateral opening arranged in the same manner as thelateral opening of the pipe 6, and a plug 22 is threaded into the ,lowerend of the T, the said plug carrying a screen corresponding to thescreen 13, and extending from the plugto the bottom of the main tank, sothat all the fuel which enters the pipe 21 must pass through the screen.

In the embodiment of the invention shown in Fig. 5, the main tank 23 hassecured to the bottom thereof an auxiliary tank 24, and this tank 24 isdivided into upper and lower compartments by a partition 25. The lower31 which passes upwardly through an opening forming a communicationbetween the upper and lower compartments.

In the embodiment ofthe invention shown in Fig. 4, any impurities thatmay be in the fuel will be precipitated at the point 17 a of the pipe,and may be drawn oil through the valve 18. A transverse partition isarranged within the portion l7 of the pipe 17, at the drain valve,acting in the same manner as the partition 7.- These partitions arebafie plates. In Fig. 5, the fuel passes downwardly through the pipe 26into the'lower compartment, where the impurities are deposited, and thefuel passes upwardly through the screen 31 into the upper compartment,from whence it is withdrawn to.

the carburetor.

In the embodiment of the invention shown in Fig. 6, the main tank 32 hassecured to the under side thereof an auxiliary tank 33. This tankcommunicates with the main tank by an opening 34, and a series of bafieplates or partitions 35 is arranged within the auxiliary tank, dependingfrom the bottom of the main tank. One of the plates 35 is at the centerof the auxiliary tank, and one near each end. At the end remote from theopening 34 the pipe 36 leads to the carburee ter, being between the endof the auxiliary tank and the endmost partition.

A plug 37 is threaded through an opening in the bottom of the auxiliarytank at this point, and the said plug carries a drain valve 38 and acylindrical screen 39, the said screen encircling the pipe 36. Theoperation of the embodiment shown in Fig. 6 is similar to that of theother embodiments, the tuel passing downward throughthe opening 34 intothe auxiliary pipe, where sediment and the like is deposited, and, maybe drawn 0E through the drain valve 38.

Inthe embodiment of the invention'shown in Fig. 7, the main tank 40 isprovided with an auxiliary tank 41 having a horizontal partition 42dividing the said tank into upper and lower compartments. The lowercompartment communicates with the main tank by a ipe 43, and with theupper con1- partment y an opening or pipe 44 at the opposite end fromthe pipe 43. This, pipe 44 has a transverse opening at the uppercompartment, through which is passed a screen 45, the said screen beingconnected with a plug 46 which is threaded through an opening in theouter side of the pipe 44.

A drain valve 47 is connected with the lower compartment at the centerthereof,

Leas es and it will be evident that any sediment in the fuel will bedeposited in thelower compartment, while the purified fuel will passupward through the pipe 44 and through the screen into the uppercompartment, from whence it may be withdrawn by the pipe 48 leading tothe carburetor.

In the embodiment of the invention shown in Fig. 8, the main tank 49 isprovided with an auxiliary tank in the form of a casing 50 having ateach end an upward extension 51 and 52, respectively, the saidextensions communicating with the main tank. This tank 50 is alsoprovided with a horizontal partition 53, which divides it into upper andlower compartments. The lower compartment has its bottom hopper-shaped,as shown, and a drain valve 54 is arranged at the lowest portion of thehopper-shaped bottom. Through the extension 52 is passed a screen 55,extending transversely of the extension, and connected with a plug 56which is threaded into the extension. The pipe 57 which leads to thecarburetor leads from the upper compartment. The fuel passing downwardlyfrom the main tank into the auxiliary tank will deposit its sediment inthe hoppershaped bottom, and the pure fuel will pass upwardly throughthe extension 52 and the screen 55 into the uppercompartment, and fromthence throughthe pipe 57 to the carbureter.

The object of all of the embodiments of the invention is to compel thefuel to pass along near the bottom of the auxiliary tank, and to moveslowly over a considerable distance, thus giving time for the impuritiesto settle. The fuel remains in the filter orauxiliary tank withoutagitation, since the auxiliary tank is full at all times. In the usualform of tank, the fuel is in a continuous state of agitation from thevibration of the vehicle and especially so when not completely filled.This agitation holds the impurities mixed with the fuel, keeping thefuel and sediment stirred up so that they will enter the fuel line tothe carburetor. With the present construction this is impossible. The

horizontal partitions of the embodiments having such partitions act alsoas bafile plates 111 the same manner as the vertical,

portions, constraining the fuel to pass near the bottom of the auxiliarytank.

I claim:

1. A liquid fuel tank, comprising a main tank, and an auxiliary tankbelow the main tank and communicating with the main tank at one end ofthe auxiliary tank, said auxiliary tank being of greatest depth atapproximately the center and decreasing in depth toward its ends andhaving a "drain valve at its lowest portion, a pipe leading from theoppositewend of the auxiliary tank Hill to the carbureter, and a screenbetween the auxiliary tank and the said pipe, and means in the auxiliarytank for constraining the the auxiliary tank and the said pipe, and fuelto flow near the bottom of the said tank. means in the auxiliary tankfor constrainin 13 2. A liquid fuel tank, comprising a main the fuel toflow near the bottom' of the sai tank, and an auxiliary tank below themain tank.

5 tank and communicating with the main tank HENRY WILLIAM GHYNOWETH.

at one end of the auxiliary tank, a pipe lead- Witnesses: ing from theopposite end of the auxiliary JAMES B. JOHNSON,

tank to the carbureter, and a screen between FRANK PARSONS.

